Snakes of both sexes display remarkable flexibility and diversity in their reproductive tactics.
Many features of reproduction in female snakes (such as reproductive mode and frequency …

Seasonality creates a template for many natural processes and evolutionary adaptations.
Organisms are often faced with an annual cycle consisting of a productive (favorable) and …

The life histories of organisms can show pronounced variation in the way that the costs of
reproduction are financed. To facilitate discussions of this variation, two terms are increasing …

Energy storage is an important component of life-history variation. A distinction is recognized
between species that provision offspring using energy gained concurrently (income …

Climatic conditions during embryonic development can exert profound and long‐term effects
on many types of organisms, but most previous research on this topic has focussed on …

Feeding rates influence reproductive output in many kinds of animals, but we need to
understand the timescale of this influence before we can compare reproductive energy …

Destruction of habitat due to urban sprawl, pollution, and deforestation has caused
population declines or even extinction of many of the world's approximately 2,600 snake …

Understanding the evolution of parental care is complicated by the occurrence of
evolutionary conflicts of interest within the family, variation in the quality and state of family …

Female aspic vipers (Vipera aspis) are “capital breeders,” and delay reproduction until they
have amassed large energy reserves. Data from an eight‐year mark–recapture study on free …

Reproductive allocation at one age is predicted to reduce the probability of surviving to the
next year or to lead to a decrease in future reproduction. This prediction assumes that …